What risks should I check before replacing AMS1117CD-5.0?

Before replacing, check three key things: 1) Pinout: Ensure the replacement's pin arrangement matches your PCB. 2) Dropout Voltage: Ensure the substitute's dropout is low enough for your input voltage. 3) Package: Confirm the physical footprint matches (TO-252).

AMS1117CD-5.0 Alternatives, Datasheet & Cross Reference | UMW

The UMW AMS1117CD-5.0 is a popular 5V, 1A Low Dropout (LDO) regulator in a TO-252 package. Several functional and pin-compatible alternatives are available, including other AMS1117-5.0 variants and parametrically similar LDOs.

AI replacement insight

Electrical risklow

Several candidates offer matching or better voltage/current ratings.

Package riskmedium

Pinout for the TO-252 package must be verified. Some candidates have different packages.

Sourcing risklow

The AMS1117 family is widely available from multiple manufacturers.

Can it be replaced directly?

Direct replacement for AMS1117CD-5.0 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The AMS1117-5.0 from other manufacturers is the most direct replacement path, as it belongs to the same component family.

Main risk

The primary risk is ensuring pin-for-pin compatibility, as the target part's datasheet lacks an explicit pinout diagram.

Recommended alternatives

A cross-vendor alternative in the same AMS1117 family, available in the matching TO-252 package.

View details

Alternative comparison matrix

Feature / factor	AMS1117CD-5.0	AMS1117-5.0	LM29150RS-5.0	BL8072COTR50	Compatibility / risk
Manufacturer	UMW	Multiple	-	-	Multiple — Candidate is a common part from multiple vendors.
Package	TO-252	TO-252	TO-252	TO-252	TO-252 — Candidate is available in the same TO-252 package.; LM29150RS-5.0: matched; BL8072COTR50: matched
Output Voltage V	5.0V	5.0V	5.0V	5.0V	5.0V — matched; LM29150RS-5.0: matched; BL8072COTR50: matched
Output Current A	1.0A	1.0A	1.5A	2.0A	1.0A / 1.5A / 2.0A — matched; LM29150RS-5.0: Higher output current capability.; BL8072COTR50: Higher output current capability.
Input Voltage V	12V	18V	26V	18V	18V / 26V — Higher input voltage tolerance provides more design margin.; LM29150RS-5.0: Higher input voltage tolerance.; BL8072COTR50: Higher input voltage tolerance.
Dropout Voltage	1.2V @ 1A	1.3V @ 1A	350mV @ 1.5A	-	1.3V @ 1A / 350mV @ 1.5A — Slightly higher dropout, check application headroom.; LM29150RS-5.0: Significantly lower dropout voltage, an upgrade.

Application & sourcing insights

Questions & answers

Verified drop-in options for AMS1117CD-5.0 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.